Page sizes in 6.1

After upgrading to OmniGraffle 6.1, all of my page sizes have been thrown off. Templates that used to fit on a US letter page now spread over four pages, even though the font sizes haven’t changed.

For example, even 12pt fonts look huge now, even though I’ve made no change to the template documents themselves.

Any help on this would be appreciated.

I have the same issue.